diff --git a/artiq-fast.nix b/artiq-fast.nix
index b2f2923..09e0dce 100644
--- a/artiq-fast.nix
+++ b/artiq-fast.nix
@@ -64,10 +64,9 @@ in
 
       buildInputs = [
         (pkgs.python3.withPackages(ps: [ ps.paramiko artiqpkgs.artiq artiqpkgs.artiq-board-kc705-nist_clock ]))
-        artiqpkgs.binutils-or1k
         artiqpkgs.openocd
         pkgs.openssh
-      ];
+      ] ++ (if (pkgs.lib.versionAtLeast artiqVersion "7.0") then [ pkgs.llvm_11 pkgs.lld_11 ] else [ artiqpkgs.binutils-or1k ]);
       phases = [ "buildPhase" ];
       buildPhase =
       ''